The U.S. aircraft register, updated daily
Fuels · Aviation gasoline · data as of November 2, 2026

UL94 unleaded avgas

An unleaded 94-octane aviation gasoline made by Swift Fuels, sold at a growing number of United States airports since 2015. Engines rated for 80/87 or 91/96 octane, and many rated for 100, are approved for it under Swift's supplemental type certificates; owners buy the certificate once. Where a participating airport switches to 100R, the UL94 certificate carries over.

The fuel

Class
Aviation gasoline
Specification
ASTM D7547
Status
in use
FAA airport-file code
UL94
16,606
aircraft are approved for it by their engine's maker
20 engine series
37
airports and fields sell it
in 12 states

Who burns it engine series on the register

Approved for it by the engine's maker as an alternative to 100LL (16,606 aircraft):

Rotax 912ULS series 3,382Rotax all models (one FAA code) 2,584Rotax 582 series 1,193Rotax 912 IS 878Rotax 582DCDI 578Rotax 503 DCDI 561Jabiru 3300 475Rotax 503 series 449Rotax 912UL series 402Rotax 915 IS 393Volkswagen (converted) CONVERSION 374Subaru (converted) ALL MDLS A/B 348Rotax 912S 335Rotax 914UL 305Rotax 912 241Rotax 914 series 228Rotax 912ULS2 208Rotax 912UL2 186Jabiru 3300A 161HKS 700E 155

An engine's fuel follows from its FAA type: piston engines burn aviation gasoline, turbines burn jet fuel, the diesel pistons burn jet fuel, electric motors charge from the grid. Each series' page lists the models and aircraft that carry it.

Approvals the FAA's supplemental type certificates for this fuel · the owner buys the certificate once

CertificateHeld byWhat it approvesModel families namedEngine series namedDate
SA01757WISwift Fuels LLCTo allow the use of UL91 or UL94 (minimum) grade aviation fuel 94—August 21, 2024
SR01802WISwift Fuels LLCTo allow the use of UL91 or UL94 (minimum) grade aviation fuel per ASTM D7547. 3—April 18, 2016

Model families the certificates name · 97, by aircraft on the register

Cessna 172 Skyhawk 20,681Piper PA-28 Cherokee, Warrior, Archer and Arrow 18,637Piper PA-32 Cherokee Six, Lance and Saratoga 3,916Piper PA-24 Comanche 2,428Piper PA-23 Apache and Aztec 1,315Piper PA-12 Super Cruiser 1,247Diamond Aircraft DA 40 Diamond Star 1,018Boeing A75 Stearman Kaydet 978Piper PA-30 Twin Comanche 880Cessna R182 Skylane RG 706Piper PA-44 Seminole 602Piper PA-25 Pawnee 455Piper PA-38 Tomahawk 442Aeronca 65 Chief and Super Chief 377Diamond Aircraft DA20 Katana and Eclipse 364Maule M-5 364Beechcraft A23 329Bellanca 14 282Maule M-7 275Dehavilland DHC-2 255Fairchild 24 242Hiller UH-12 217Hughes 269 300 series helicopters 207Maule M-4 207Rockwell International 112 207Daher (Socata) TB-20 200Maule MX-7 193Waco UPF-7 189Fairchild M-62 186Great Lakes 2 168Piper PA-15 165Douglas DC-3 155Costruzioni Aeronautiche Tecna P2010 139Maule MXT-7 134Taylorcraft BL-65 134Ryan Aeronautical ST3 117Interstate S-1 104Commander Aircraft Co 114 103Piper PA-14 100Mooney M-18 98Howard Aircraft DGA-15 97Piper PA-17 Vagabond 97Piper PA-39 Twin Comanche C/R 82Maule M-6 81Maule MT-7 76Monocoupe 90 63Britten-Norman BN-2 54Brantly B-2 53Daher (Socata) TB 10 53Daher (Socata) TB 9 34Cub Crafters CC18 33Porterfield LP-65 27S.O.C.A.T.A. MS894 27Omf OMF-100 25Stinson HW75 23Avions Mudry Et Cie CAP 10 22Cessna C-165 21Waco YKS-7 21Found Acft Canada Inc FBA-2 19Porterfield CP-65 19Helio H-395 17Siai-Marchetti F.260C 17Stinson SR-10 17Helio H-391 16S.O.C.A.T.A. RALLYE 235 16Taylorcraft BL12 16Consolidated Aeronautics Inc. LAKE LA-4 15Estumkeda Ltd Dba Micco Acft MAC-145 15Symphony Aircraft Ind Inc SA 160 15Waco YKS-6 15Emigh TROJAN A-2 14Indus Aviation Inc T-211 14Meyers MAC-145 14Varga Aircraft Corp. 2180 14Pilatus Britten-Norman Ltd. BN-2 13Boeing IB75 12Stinson JR. S 12Waco VKS-7 12Agusta Spa F.260D 11Helio H-250 11S.O.C.A.T.A. RALLYE 150 10Consolidated Vultee 28 9Stinson JR. SR 9Consolidated Vultee BT-15 8Dornier DO 27 8Dornier DO28 7Porterfield FP-65 7Ryan Aeronautical SCW-145 7Siai-Marchetti F.260 7Waco ZQC-6 7Aeronca S-65 6Curtiss Wright TRAVEL AIR D-4000 5Howard Aircraft DGA-11 5Northwestern PORTERFIELD 35 5Thurston TSC-1 5Waco YQC-6 5Waco ZKS-7 5

The families and series are those the FAA's certificate listing names; a certificate written for "all spark-ignition engines" names none and covers them all. Whether one aircraft is covered depends on its exact model and engine, which the certificate's approved model list settles; the aircraft's own page says what applies to it.

Where it is sold 37 airports and fields in 12 states

California 12Wisconsin 4Colorado 3Florida 3Indiana 3Ohio 3Minnesota 2Texas 2Michigan 2Illinois 1Massachusetts 1Pennsylvania 1
AirportWhereBased aircraftSays who
Centennial AirportDenver, Colorado870 the FAA's airport file
Van Nuys AirportVan Nuys, California720 the FAA's airport file
Rocky Mountain Metro AirportDenver, Colorado476 the FAA's airport file
Hayward ExecutiveHayward, California446 the FAA's airport file
Montgomery-Gibbs ExecutiveSan Diego, California412 the FAA's airport file
Long Beach (Daugherty Field)Long Beach, California398 the FAA's airport file
Buchanan FieldConcord, California362 the FAA's airport file
Naples MunicipalNaples, Florida351 the FAA's airport file
Reid-Hillview Of Santa Clara CountySan Jose, California330 the FAA's airport file
San Carlos AirportSan Carlos, California260 the FAA's airport file
South St. Paul Muni/Richard E Fleming FieldSouth St Paul, Minnesota236 the FAA's airport file
Whiteman AirportLos Angeles, California223 the FAA's airport file
Monterey RegionalMonterey, California152 the FAA's airport file
Deland Muni-Sidney H Taylor FieldDeland, Florida150 the FAA's airport file
Sebring RegionalSebring, Florida104 the FAA's airport file
Middleton Muni/Morey FieldMiddleton, Wisconsin91 the FAA's airport file
Hollywood Burbank AirportBurbank, California81 the FAA's airport file
Santa Monica MunicipalSanta Monica, California74 the FAA's airport file
Waco RegionalWaco, Texas74 the FAA's airport file
Boulder MunicipalBoulder, Colorado59 the FAA's airport file
Griffith-Merrillville AirportGriffith, Indiana53 the FAA's airport file
Michigan City Muni-Phillips FieldMichigan City, Indiana51 the FAA's airport file
Marshall CountyLacon, Illinois49 the FAA's airport file
Brooks FieldMarshall, Michigan35 the FAA's airport file
San Martin AirportSan Martin, California34 the FAA's airport file
Sauk/Prairie AirportPrairie du Sac, Wisconsin34 the FAA's airport file
Cumberland MunicipalCumberland, Wisconsin23 the FAA's airport file
Fulton CountyWauseon, Ohio22 the FAA's airport file
Brown CountyGeorgetown, Ohio9 the FAA's airport file
Reese AirportMuncie, Indiana— the FAA's airport file
Falmouth AirparkFalmouth, Massachusetts— the FAA's airport file
Rossettie AirportManchester, Michigan— the FAA's airport file
Stanton AirfieldStanton, Minnesota— the FAA's airport file
Hollister FieldWilmington, Ohio— the FAA's airport file
Smoketown AirportSmoketown, Pennsylvania— the FAA's airport file
Dublin MunicipalDublin, Texas— the FAA's airport file
Carter AirportPulaski, Wisconsin— the FAA's airport file

Connections how this fuel links to the rest of the register

Also approved for it, by the maker
Approved for it under an STC
The approvals
Sold at
Other aviation gasoline
More

The whole map of how records connect · these connections as data: /graph/fuel/ul94.json.

Sources: FAA Civil Aviation Registry (November 2, 2026) for the engines and aircraft; the FAA airport master file for fuel sold; the FAA's supplemental type certificate listings for the approvals; SAFxCHANGE's record for the plants, deals and the airports named in the news; the sellers' own websites where named. Specifications as published by ASTM International and the U.S. military. The fuel makers' own pages say where their fuel is sold this month; this page is as current as those records.